EP1497094A1 - Method and device for processing preforms - Google Patents
Method and device for processing preformsInfo
- Publication number
- EP1497094A1 EP1497094A1 EP03727196A EP03727196A EP1497094A1 EP 1497094 A1 EP1497094 A1 EP 1497094A1 EP 03727196 A EP03727196 A EP 03727196A EP 03727196 A EP03727196 A EP 03727196A EP 1497094 A1 EP1497094 A1 EP 1497094A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- preforms
- preform
- porous material
- vacuum
- porous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000012545 processing Methods 0.000 title claims abstract description 10
- 239000011148 porous material Substances 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 29
- 238000001746 injection moulding Methods 0.000 claims abstract description 12
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 6
- 238000000071 blow moulding Methods 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000004416 thermosoftening plastic Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 238000010102 injection blow moulding Methods 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 2
- 229910000881 Cu alloy Inorganic materials 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000004020 conductor Substances 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000003570 air Substances 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000006262 metallic foam Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/071—Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/6409—Thermal conditioning of preforms
- B29C49/6427—Cooling of preforms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/6409—Thermal conditioning of preforms
- B29C49/6463—Thermal conditioning of preforms by contact heating or cooling, e.g. mandrels or cores specially adapted for heating or cooling preforms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/7207—Heating or cooling of the moulded articles
- B29C2045/7214—Preform carriers for cooling preforms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C2049/023—Combined blow-moulding and manufacture of the preform or the parison using inherent heat of the preform, i.e. 1 step blow moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
- B29C2049/065—Means for compensating or avoiding the shrinking of preforms, e.g. in the injection mould or outside the injection mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2791/00—Shaping characteristics in general
- B29C2791/001—Shaping in several steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/006—Using vacuum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/007—Using fluid under pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
- B29C2949/0721—Tangentially varying thickness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
- B29C2949/0723—Preforms or parisons characterised by their configuration having variable wall thickness at flange portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
- B29C2949/0724—Preforms or parisons characterised by their configuration having variable wall thickness at body portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
- B29C2949/0732—Preforms or parisons characterised by their configuration having variable diameter at flange portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
- B29C2949/0733—Preforms or parisons characterised by their configuration having variable diameter at body portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
- B29C2949/0761—Preforms or parisons characterised by their configuration characterised by the shape characterised by overall the shape
- B29C2949/0764—Elliptic or oval cross-section shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
- B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
- B29C2949/077—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the neck
- B29C2949/0772—Closure retaining means
- B29C2949/0773—Threads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/22—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at neck portion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/24—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at flange portion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/26—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at body portion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/28—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at bottom portion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/30—Preforms or parisons made of several components
- B29C2949/3024—Preforms or parisons made of several components characterised by the number of components or by the manufacturing technique
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/30—Preforms or parisons made of several components
- B29C2949/3032—Preforms or parisons made of several components having components being injected
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/7207—Heating or cooling of the moulded articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/42392—Avoiding marks or scratches, e.g. mould marks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/4242—Means for deforming the parison prior to the blowing operation
- B29C49/42421—Means for deforming the parison prior to the blowing operation before laying into the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/6604—Thermal conditioning of the blown article
- B29C49/6605—Heating the article, e.g. for hot fill
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/68—Ovens specially adapted for heating preforms or parisons
- B29C49/681—Ovens specially adapted for heating preforms or parisons using a conditioning receptacle, e.g. a cavity, e.g. having heated or cooled regions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/253—Preform
Definitions
- the invention relates to a method for processing of ormlingen from a thermoplastic, which are provided for blow molding in containers and in which the preforms are injection molded in an injection molding tool and are deformed after removal from the injection molding tool.
- the invention further relates to a device for processing preforms made of a thermoplastic, which are provided for blow molding in containers and are injection molded in an injection molding tool, in which the preforms are acted upon by at least one cooling device.
- a method for processing preforms made of a thermoplastic is described, for example, in PCT-WO 97/39874.
- the preforms are here after removal from the injection mold, transferred into cooling sleeves and pressed against the walls of the cooling sleeve by application of an internal pressure.
- an internal pressure As a result, contact of the preforms with the wall of the cooling sleeve is maintained during the entire cooling process, since shrinkage of the preforms due to the cooling can be compensated for by the internal pressure acting on them.
- a blow molding deformation of preforms in containers within a blow mold is explained in DE 41 28 438 AI.
- the blow mold is provided with porous plugs that are connected to a pressure source. By applying compressed air to the porous plugs, a compressed air cushion is provided which prevents surface damage to the blown containers by the material sliding on the inner surface of the blow mold.
- the object of the present invention is to improve a method of the type mentioned in the introduction in such a way that the production of preforms is supported with less time and with a simple construction.
- This object is achieved in that the preforms are deformed by the action of negative pressure.
- a further object of the present invention is to construct a device of the type mentioned in the introduction in such a way that processing of the preforms is supported with a simple device construction and with a low manufacturing price of the device.
- the cooling device is formed at least in regions from a porous material.
- the deformation of the preforms by the action of negative pressure following the injection molding of the preforms leads to a number of advantages.
- An advantage is that the preform can be pulled against walls of a cooling sleeve by an external negative pressure action and that as a result, direct contact between the preform and the wall of the cooling sleeve is maintained during the entire cooling process.
- the preform can be deformed in the longitudinal direction, in a radial direction and / or in a circumferential direction with respect to a longitudinal axis of the preform, so that the preform is designed differently from the contour of the cavities of the injection molding tool can be provided.
- a further advantage is that preforms which are undesirably deformed by the negative pressure or which are not fully formed by the injection molding tool can be re-formed.
- This makes it possible, on the one hand, to align curved preforms or to compensate for preform deformations.
- warping of the preforms which have been demolded too hot or formation of sink marks is accepted, since these defects of the preforms can be compensated for by the post-deformation and by the action of negative pressure.
- the very expensive injection molding tools can thus be used with increased productivity.
- a typical deformation process takes place in such a way that the negative pressure acts on the outside of the preforms.
- a preferred application is that the preforms are subjected to the negative pressure within a cooling device.
- An inexpensive vacuum supply can be achieved in that the preforms are acted upon by the vacuum through a porous material.
- the negative pressure be supplied to the porous material through negative pressure channels.
- Handling of the preforms can be supported by applying a pressure medium locally to the preforms.
- the process flow can be additionally influenced in that the preforms are temporarily pressurized.
- a specification of locally different pressure conditions along an inner boundary of the cavity accommodating the preform can be achieved in that local porous inserts can be connected to a pressure source and a vacuum source in some cases via control valves.
- the preform can be deformed from the inside by deforming the preform using a porous inner mandrel.
- a locally limited material deformation is supported by the fact that the internal mandrel provides a local vacuum effect on the preform.
- a typical application is that the deformation of the preform is carried out as an intermediate step in the implementation of a one-stage injection blow molding process.
- the deformation of the preform is carried out as an intermediate step in the implementation of a two-stage injection blow molding process.
- porous material is arranged in the region of a cooling sleeve.
- the porous material be designed as an insert which is held by a frame.
- a vacuum supply within the porous material with low flow resistances is achieved in that at least one vacuum channel is arranged in the area of the insert.
- At least one cooling channel is arranged in the area of the frame.
- Pressure shielding from an environment can be achieved in that the insert is covered at least in regions by a seal.
- the vacuum channel extend into the area of a cavity of the insert.
- a targeted local specification of the effectiveness of the pressure conditions achieved can be achieved in that the inner mandrel is covered at least in regions by a seal.
- the inner mandrel is covered by a seal in the region of a dome.
- the inner mandrel is provided with at least one membrane which delimits a distribution chamber.
- a typical material selection is that the porous material is designed as a porous metal.
- a particularly good thermal conductivity can be achieved in that the porous metal is made of aluminum.
- the porous material is designed as a sintered metal. These materials can be used with variable pore sizes, from a few ⁇ m upwards. The smaller the pore size chosen, the better the surface quality of the preform. If the pore size is too small, the pressure / vacuum requirement is too high. Furthermore, too small pores tend to become clogged with dust.
- porous (air-permeable) materials are commercially available, for example: "METAPOR®” PORTEC AG;
- 1 shows a cross section through a cooling device in which a cooling sleeve is formed from a porous element
- 2 shows a modified embodiment compared to FIG. 1, in which both the negative pressure and the positive pressure can be conducted in the direction of the preform through the porous element
- FIG. 3 shows a cross section through an embodiment in which a plurality of spatially separated porous inserts are used, which are controllably connectable to overpressure and / or underpressure,
- FIG. 5 shows an embodiment modified from FIG. 4, in which the inner mandrel is designed for complete post-deformation of the preform
- FIG. 6 shows an embodiment modified from FIG. 5, in which deformation forces are applied to the preform by means of a membrane attached to the inner mandrel,
- FIG. 7 shows a cross section through a preform arranged in an insert made of porous material
- Fig. 8 is a cross-sectional view corresponding to Fig. 7 after deformation of the preform by the action of vacuum and 9 shows a schematic cross-sectional illustration of a deformed preform according to FIG. 8 and a corresponding oval container contour after blow molding of the preform.
- Fig. 1 shows a cross section through a device for processing preforms (1), which has a frame (2) and an insert (3) made of a porous material.
- porous material here includes both open-pore foam-like structures and sintered materials or comparable material structures. Due to the high thermal conductivity, open-pore metal foams, for example made of aluminum, have proven particularly useful.
- the preform (1) consists of a thermoplastic material, for example of PET (polyethylene terephthalate), and is provided with a side wall (4), a support ring (5) and a mouth section (6).
- An interior (7) of the preform (1) extends along a preform longitudinal axis (8).
- a vacuum channel (9) extends through the frame (2) and is connected to a vacuum channel (10) within the insert (3).
- cooling channels (11) through which a cooling medium can circulate.
- a surface of the insert (3) is closed by a seal (13) in order to prevent ambient air from being sucked in when a vacuum is applied.
- the preform (1) is inserted into a cavity (14) of the insert (3) in such a way that the support ring (5) in the region of the Surface of the insert (3) rests.
- air between the preform (1) and the cavity (14) is extracted and the ambient pressure in the interior (7) of the preform (1) presses the side wall (4) of the preform (1 ) against a boundary surface (15) of the cavity (14).
- the resulting material contact leads to an improved cooling of the preform (1) and contributes to the fact that the preform (1) takes on the shape of the boundary surface (15).
- the vacuum channel (10) extends to the cavity (14) of the insert (3).
- the cooling channels (11) are arranged in the area of the frame (2).
- a pressure medium channel (16) is arranged in the area of the frame (2), which opens into a pressure medium connection (17) of the insert (3).
- the pressure medium is preferably introduced at a short distance from the seal (13). This creates an air flow through the cavity (14) in the direction of the vacuum channel (9), which facilitates insertion of the preforms (1) into the cavity (14) and scratches on the preform (1) due to contact with the boundary surface ( 15) avoids. In addition, an uneven contact of the preform (1) with the insert (3) is avoided, which would lead to uneven cooling of the preform (1).
- the cavity (14) is formed in the area of the frame (2) and a plurality of porous inserts (3) are arranged in the area of the boundary surface (15) of the cavity (14).
- the porous inserts (3) are spatially separated from one another here.
- the inserts (3) are each connected to supply channels (18) which can be predetermined by a control valve (19) Pressure source (20) or a vacuum source (21) can be connected.
- the vacuum channel (9) extends into the region of the cavity (14).
- a vacuum channel (9) is first subjected to a vacuum. As soon as the preform (1) is completely in the cavity (14), the vacuum source (21) releases a higher vacuum in order to press the preform (1) against the boundary surface (15).
- the spatially separated inserts (3) provide nozzle-like arrangements which can cause local deformations of the preform (1) or can produce compressed air cushions for the preforms (1).
- the preform (1) is acted upon by an inner mandrel (22) which is made of a porous material.
- the inner mandrel (22) is provided with a pressure medium channel (23).
- the pressure medium channel (23) can supply both overpressure and underpressure depending on a particular control.
- the inner mandrel (22) is provided with a seal (24) on the outside in some areas.
- the inner mandrel (22) is designed only for a partial re-deformation of the preform (1) in the region of the mouth section (6) and a part of the side wall (4) facing the mouth section (6). In the region of a dome (25), the inner mandrel (22) therefore also carries a seal (26) here.
- the inner mandrel (22) is for post-deformation of the preform (1) along the entire extent of the preform longitudinal axis (8).
- the inner mandrel (22) therefore has a contour that is modified compared to the embodiment in FIG. 4.
- a seal (26) in the area of the dome (25) is not required in this embodiment.
- air cooling (27) acting on the preform (1) from the outside can be implemented according to the embodiment in FIG. 5.
- the pressure medium channel (23) is connected to distribution chambers (28) which are closed by membranes (29).
- the membranes (29) are pressed against the side wall (4) of the preform (1) and deform the preform (1).
- the preform (1) can also be pressed against the inner wall of a cooling sleeve or deformed in a predetermined manner by the force generated by the membrane (29).
- Fig. 7 shows a cross section through an insert (3) with a preform (1) inserted into the cavity (14).
- the insert (3) is held by the frame (2).
- the preform (1) according to FIG. 1 is deformed into a preform according to FIG. 8. 8 that the deformation in a circumferential direction of the preform produced a different course of the wall thickness. 8 is particularly suitable for the production of oval bottles.
- FIG. 9 shows the assignment of the preform (1) according to FIG. 8 to a container contour (30) of a container with an oval Cross-section.
- the material distribution in the preform (1) is selected such that those areas which are only relatively slightly stretched during the subsequent blow molding are made thinner than those areas which are stretched more strongly during the blow molding.
- the corresponding material distribution in a blown container supports a very uniform wall thickness distribution and thus uniform material properties.
- the material can be cleaned in a simple manner in such a way that pressure medium is applied without the preform (1) being inserted, which leads to the blowing off of impurities.
- a separation of the preform (1) from the inner mandrel (22) can also be supported by pressurizing the inner mandrel (22). If the inner mandrel (22) and an insert (3) made of a porous material are used in combination, a separation of the preform (1) from the inner mandrel (22) can also be supported by an external vacuum application.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20070014410 EP1867456B1 (en) | 2002-04-10 | 2003-04-10 | Method and device for machining preforms |
EP20090009014 EP2161116A1 (en) | 2002-04-10 | 2003-04-10 | Method and device for machining preforms |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002115722 DE10215722B4 (en) | 2002-04-10 | 2002-04-10 | Method and device for processing preforms |
DE10215722 | 2002-04-10 | ||
PCT/DE2003/001202 WO2003086728A1 (en) | 2002-04-10 | 2003-04-10 | Method and device for processing preforms |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20070014410 Division EP1867456B1 (en) | 2002-04-10 | 2003-04-10 | Method and device for machining preforms |
Publications (2)
Publication Number | Publication Date |
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EP1497094A1 true EP1497094A1 (en) | 2005-01-19 |
EP1497094B1 EP1497094B1 (en) | 2008-12-17 |
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Application Number | Title | Priority Date | Filing Date |
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EP20070014410 Expired - Lifetime EP1867456B1 (en) | 2002-04-10 | 2003-04-10 | Method and device for machining preforms |
EP20090009014 Withdrawn EP2161116A1 (en) | 2002-04-10 | 2003-04-10 | Method and device for machining preforms |
EP20030727196 Expired - Lifetime EP1497094B1 (en) | 2002-04-10 | 2003-04-10 | Method and device for processing preforms |
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Application Number | Title | Priority Date | Filing Date |
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EP20070014410 Expired - Lifetime EP1867456B1 (en) | 2002-04-10 | 2003-04-10 | Method and device for machining preforms |
EP20090009014 Withdrawn EP2161116A1 (en) | 2002-04-10 | 2003-04-10 | Method and device for machining preforms |
Country Status (18)
Country | Link |
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US (2) | US7648662B2 (en) |
EP (3) | EP1867456B1 (en) |
JP (1) | JP2005522353A (en) |
KR (1) | KR100669304B1 (en) |
CN (2) | CN100446955C (en) |
AT (3) | ATE474703T1 (en) |
AU (1) | AU2003233750B2 (en) |
CA (2) | CA2478874C (en) |
CO (1) | CO5631417A2 (en) |
DE (3) | DE10215722B4 (en) |
IL (1) | IL164148A0 (en) |
MX (1) | MXPA04009738A (en) |
NZ (1) | NZ536313A (en) |
PL (1) | PL371213A1 (en) |
RU (1) | RU2297914C2 (en) |
UA (1) | UA77077C2 (en) |
WO (1) | WO2003086728A1 (en) |
ZA (1) | ZA200408113B (en) |
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2003
- 2003-04-10 DE DE50312919T patent/DE50312919D1/en not_active Expired - Lifetime
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- 2003-04-10 JP JP2003583717A patent/JP2005522353A/en active Pending
- 2003-04-10 NZ NZ536313A patent/NZ536313A/en unknown
- 2003-04-10 EP EP20070014410 patent/EP1867456B1/en not_active Expired - Lifetime
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- 2003-04-10 MX MXPA04009738A patent/MXPA04009738A/en active IP Right Grant
- 2003-04-10 AT AT03727196T patent/ATE417719T1/en active
- 2003-04-10 EP EP20090009014 patent/EP2161116A1/en not_active Withdrawn
- 2003-04-10 WO PCT/DE2003/001202 patent/WO2003086728A1/en active IP Right Grant
- 2003-04-10 DE DE50310931T patent/DE50310931D1/en not_active Expired - Lifetime
- 2003-04-10 CN CN2006100752935A patent/CN1853893B/en not_active Expired - Fee Related
- 2003-04-10 EP EP20030727196 patent/EP1497094B1/en not_active Expired - Lifetime
- 2003-04-10 IL IL16414803A patent/IL164148A0/en unknown
- 2003-04-10 AT AT0909503A patent/AT504002B1/en not_active IP Right Cessation
- 2003-10-04 UA UA20041109198A patent/UA77077C2/en unknown
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2004
- 2004-10-07 ZA ZA200408113A patent/ZA200408113B/en unknown
- 2004-11-09 CO CO04112750A patent/CO5631417A2/en not_active Application Discontinuation
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2009
- 2009-08-20 US US12/544,309 patent/US20090309269A1/en not_active Abandoned
Non-Patent Citations (1)
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